5.15-stable review patch. If anyone has any objections, please let me know.
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From: Nicolas Ferre nicolas.ferre@microchip.com
[ Upstream commit 0c01fe49651d387776abed6a28541e80c8a93319 ]
Add a new word in assembly to store ACR value during the calls to at91_plla_disable/at91_plla_enable macros and use it.
Signed-off-by: Nicolas Ferre nicolas.ferre@microchip.com [cristian.birsan@microchip.com: remove ACR_DEFAULT_PLLA loading] Signed-off-by: Cristian Birsan cristian.birsan@microchip.com Link: https://lore.kernel.org/r/20250827145427.46819-4-nicolas.ferre@microchip.com Reviewed-by: Alexandre Belloni alexandre.belloni@bootlin.com Signed-off-by: Claudiu Beznea claudiu.beznea@tuxon.dev Signed-off-by: Sasha Levin sashal@kernel.org --- arch/arm/mach-at91/pm_suspend.S | 8 +++++++- 1 file changed, 7 insertions(+), 1 deletion(-)
diff --git a/arch/arm/mach-at91/pm_suspend.S b/arch/arm/mach-at91/pm_suspend.S index 60f9d6f5f8229..1b8d1fbb41ef4 100644 --- a/arch/arm/mach-at91/pm_suspend.S +++ b/arch/arm/mach-at91/pm_suspend.S @@ -685,6 +685,10 @@ sr_dis_exit: bic tmp2, tmp2, #AT91_PMC_PLL_UPDT_ID str tmp2, [pmc, #AT91_PMC_PLL_UPDT]
+ /* save acr */ + ldr tmp2, [pmc, #AT91_PMC_PLL_ACR] + str tmp2, .saved_acr + /* save div. */ mov tmp1, #0 ldr tmp2, [pmc, #AT91_PMC_PLL_CTRL0] @@ -754,7 +758,7 @@ sr_dis_exit: str tmp1, [pmc, #AT91_PMC_PLL_UPDT]
/* step 2. */ - ldr tmp1, =AT91_PMC_PLL_ACR_DEFAULT_PLLA + ldr tmp1, .saved_acr str tmp1, [pmc, #AT91_PMC_PLL_ACR]
/* step 3. */ @@ -1130,6 +1134,8 @@ ENDPROC(at91_pm_suspend_in_sram) .word 0 .saved_mckr: .word 0 +.saved_acr: + .word 0 .saved_pllar: .word 0 .saved_sam9_lpr: